zl-wkhtmltopdf

Convert HTML to PDF using WKHTMLTOPDF command line tools. WKHTMLTOPDF is an open source (LGPLv3) command line tools to render HTML into PDF using the Qt WebKit rendering engine.

Installation

Install:

WKHTMLTOPDF command line tools.

npm install zl-wkhtmltopdf

Add require:

var wkhtmltopdf = require('wkhtmltopdf')

Note: Be sure wkhtmltopdf is in your PATH when you're done installing.

Usage

• Convert HTML to PDF and save in your file system:

// Module
var wkhtmltopdf = require('../lib/wkhtmltopdf')

// Add some options
var options = [
  '--grayscale',
  '--quiet'
]

// Convert the Google.com HTML page to PDF (it can be HTML or an HTML file)
var input = 'https://google.com'

// An output name
var output = 'google.com.pdf'

// Exec WKHTMLTOPDF
var pdf = wkhtmltopdf(options, input, output)

// Listener stdout data event
pdf.stdout.on('data', function (data) {
  console.log('Got data from child: ' + data)
})

// Listener stderr error event
pdf.stderr.on('data', function (err) {
  console.log('There was an error: ' + err)
})

// Listener error event
pdf.on('error', function (err) {
  console.log('Error:' + err)
})

// Listener close event
pdf.on('close', function (code) {
  console.log('WKHTMLTOPDF closed with code: ' + code)
})

// Listener exit event
pdf.on('exit', function (code) {
  console.log('WKHTMLTOPDF exited with code: ' + code)
})

• Generate HTML to PDF and stream it:

// Module
var http = require('http')
var wkhtmltopdf = require('../lib/wkhtmltopdf')

// Add some options
var options = [
  '--grayscale',
  '--quiet'
]

// Convert the Google.com HTML page to PDF
var input = 'https://google.com'

var convertHtmlToPdf = function (req, res) {
  // Exec WKHTMLTOPDF
  var pdf = wkhtmltopdf(options, input)

  // Pipe stdout directly to res (pipe where you want)
  pdf.stdout.pipe(res)

  // Listener stderr error event
  pdf.stderr.on('data', function (err) {
    console.log('There was an error: ' + err)
  })

  // Listener error event
  pdf.on('error', function (err) {
    console.log('Error:' + err)
  })

  // Listener close event
  pdf.on('close', function (code) {
    console.log('WKHTMLTOPDF closed with code: ' + code)
  })

  // Listener exit event
  pdf.on('exit', function (code) {
    console.log('WKHTMLTOPDF exited with code: ' + code)
  })
}

// Create server
var server = http.createServer(convertHtmlToPdf)

// Server listening on port 3000
server.listen(3000, function () {
  console.log('Server listening on port: 3000')
})

• WKHTMLTOPDF official documentation, see it for options: http://wkhtmltopdf.org/usage/wkhtmltopdf.txt

Tests

npm test

Authors

• 90Tech
• Kevin RUBY

License

MIT